Modernizing Identity Security: Why You Still Need AD in a Cloud-First World Posted by: Derek Melber TL;DR: Identity Security in the Cloud Requires Both AD and Entra in Most Cases - You cannot replace Active Directory with Entra ID in most environments. Identity security in hybrid organizations requires both AD (for Kerberos, NTLM, and Group Policy) and Entra ID (for OIDC, OAuth, SAML, and cloud au...